What does the re-washing process mean?

What is "washing again"? Is it a technology? Tell me something about someone who knows.

Water washing is a process of jeans, and re-washing is a process of sand washing denim fabric for many times, that is, the degree of water washing is deep to achieve the desired effect.

Light washing is a process of light washing denim fabric, which is finished at one time.

(In fact, it seems that this term was first called by a layman. Later, people called the clothes with complicated water washing stone mill and destructive water washing, which was more convenient. In fact, you go to the washing factory and tell people that I want to do heavy washing, and people don't know what you want to do. The general requirements in the garment technology book are very clear, such as enzyme washing, enzyme stone grinding or softener. Conversely, you tell ordinary people that I am. )

What do you mean by washing jeans again? Specifically, is the fabric thick? thank you

Water washing is a process of jeans, and re-washing is a process of sand washing denim fabric for many times, that is, the degree of water washing is deep to achieve the desired effect. Um ... it will be thicker.

Why should jeans be washed? What is the washing process like?

Original source: sunjeans/forum/view.asp? Id= 1344 Text: Sunshine jeans, as a popular fashion dress, have a remarkable feature different from other clothes. Jeans (the same is true of other denim garments, taking jeans as an example here) need to be made into semi-finished products in the garment workshop, then sent to the washing plant for washing water treatment, then taken back to the garment workshop for ironing, nailing, wagon tag and other finishing, and finally packaged. Why should jeans be washed? It has the following functions. (Personal summary) First do desizing and floating color washing to achieve the basic wearing function. All woven fabrics should be desized, and denim is no exception. Generally, woven fabrics will be desized when dyed or printed, but denim is directly woven after yarn dyeing, and there is no process of cloth dyeing or printing, so the finished denim is not desized, and can only be desized when washed. The color dyed on jeans is mainly indigo, which is a weak color. Indigo can't be directly dissolved in water or dyed with cotton yarn. It can only be oxidized first and then dyed by reduction. This determines that in the dyeing process of brilliant blue, it is impossible to have a dye uptake of 100%, which will cause a lot of floating colors. This part of floating color will be washed off by several clear water tanks before passing through the sizing tank in the sizing process, but there are still many floating colors left on the yarn, so there are still a lot of floating colors in the finished fabric after weaving and finishing. Now, besides indigo, sulfur dyes are also used, and there are also floating phenomena. It is very important to wash off the floating color of jeans through the water washing factory. Some friends who play with cows will mention the word "original cloth jeans" and think that jeans can be worn directly without washing water, which is unscientific. In fact, it should be called primary color jeans more accurately, because after washing and desizing, the color of jeans remains unchanged, without any chemical and physical treatment, and the old effect is achieved by natural wearing (players also call it "raising cattle"), but primary color jeans must also be washed to remove floating color and desizing, otherwise jeans can't be worn at all. The second is to do the old by hand. This is also the main purpose of washing jeans. Through various physical and chemical methods, the newly made jeans feel like they are naturally worn out. There are many styles of washing water, and new washing methods are constantly being created. The added value of jeans is often reflected by washing water. Usually, the more complicated the handwork, the more natural and high-grade the washing effect will be. Thirdly, the size of jeans is ultimately determined by high temperature setting. Because of its heavy weight, denim has a much larger shrinkage rate than ordinary fabrics. In the finishing workshop of weaving factory before garment production, denim has been pre-shrunk and shaped once, but this is only the first step of shrinkage treatment. Before putting the pattern, the garment factory should measure the shrinkage rate of the finished fabric again to determine the size of each piece when putting the pattern. Generally, the shrinkage rate of pure cotton denim after garment is about 2% (depending on the fabric structure, the shrinkage rate of some adulterated fabrics is much larger than this ratio), and the elastic denim is even larger, usually as high as 10% or more. Jeans should be durable, and it is very important for the washing factory to shrink and set. When we buy jeans outside, we often find that the size is inaccurate, which is mainly caused by the poor setting of the washing factory (the fabric, the effect of making boards and whether the pattern is the same will also affect the size accuracy). Fourth, do some other treatments to improve the appearance style and wearability of jeans. Such as fixing color, adding softener, coating, resin finishing, anti-wrinkle treatment and so on.

Difference between fermentation washing and heavy fermentation grinding in industrial water washing

The method of grinding with enzyme washing water is called yeast grinding.

Re-fermentation is an enzyme washing technology, which makes the process stronger.

First, general washing. It is the most basic washing method to send the sewed clothes to the washing factory for desizing with hot water of about 50 degrees for ten minutes, dehydration and air drying. There is also strong washing, washing with water at a higher temperature. When clothes are washed dry, they are only pulped and become soft. The color has not changed.

Second, yeast washing. Washing clothes means adding an enzyme (full name is complex, there are several varieties).

Third, bleaching and dyeing. In this washing water, some dyeing materials will be added to dye clothes.

Four, stone drift, stone mill, snowflake washing, in fact, in water treatment plants are classified into one category, but the time and degree of washing are different. These washing methods are nothing more than mixing pumice (a kind of stone that can float in water and produce a lot of natural minerals through volcanic eruption) with yeast and color at the beginning, and then pouring clothes in. Stir in a drum mixer 10 to 30 minutes. Then washing, dewatering and drying. Stone bleaching, stone grinding, snowflake washing, etc. It is only in the process of mixing that the effect of stone mill on clothes is controlled by the length of time.

Five, sandblasting, is to use sandblasting machine to spray white clothes, spray flowers. The common effect is that a pair of trousers has a white-sprayed area.

Sixth, spray stirrup, spray cat beard. Some of these are made by drawing basic patterns with liquid medicine and then polishing and bleaching. But I didn't really see the operation of this method, because it was well kept secret when it was made. Just talking to the workers. So it's not exact. In fact, many of the effects we can see now are achieved through early drug processing, grinding and bleaching.

Seven, silicone oil. Adding this when washing water can make the washed clothes softer, smoother and better in texture, without the rough feeling of denim at all.

In fact, in water treatment plants, all kinds of methods are just adding unused substances in the washing process, controlling different time and temperature, and increasing or decreasing different processes. When washing, the PH value should be well controlled, because in this process, the master will add different amounts of vinegar essence and industrial hydrogen peroxide, and some will also use soda ash to wash.

All of the above laundry water softens and discolors clothes. Some clothes that look as hard as canvas can become as soft as silk after washing. It's an eye-opener

In a water washing factory, there are usually several water washing masters, and the formula, washing steps, temperature and time of each person are confidential.

The post-processing method of cowboy is divided into stone mill. Rinsing and light bleaching. Heavy bleaching, fermentation washing, fermentation grinding and "frying". . . . .

Water washing method of water washing equipment

1, general washing (clothing washing) General washing refers to general washing, but the washing we are familiar with on weekdays is changed to mechanization. When the water temperature is about 60-90℃, a certain amount of detergent is added, and after about 15 minutes of ordinary washing, water and softener are added to make the fabric softer and more comfortable, and visually more natural and clean. Generally speaking, according to the length of washing time and the dosage of chemicals, general washing can be divided into light general washing, general washing and heavy general washing. Usually, it takes about 5 minutes for light washing, 15 minutes for heavy washing, and 30 minutes for heavy washing (this time is not accurate). There is no obvious boundary between these three washing methods. 2. Stone washing/stone washing is to add a certain size of pumice to the washing water to polish the pumice and clothes. The water level in the polishing tank is at a low level that completely soaks the clothes, so that pumice can contact the clothes well. Generally, washing or rinsing can be performed before the stone mill, and rinsing can also be performed after the stone mill. According to different requirements of customers, Yellowstone, Baishi, AAA stone, artificial stone and rubber ball can be selected for washing to achieve different washing effects. After washing, the cloth is gray and old, and the clothes are slightly to severely damaged. 3. Enzymatic washing enzyme is a kind of cellulase, which can degrade the fiber structure at a certain PH value and temperature, make the cloth surface gently fade and depilate (produce "peach skin velvet" effect), and obtain a lasting soft effect. Stones can be used together or instead of stones. If used with stones, it is usually called enzyme stone washing. 4. Sand washing Sand washing uses some alkaline and oxidizing additives to make clothes have a certain fading effect and a sense of obsolescence after washing. If matched with a stone mill, a layer of soft frosty fluff will be produced on the surface of the washed cloth, and some softener will be added to make the washed cloth soft, thus improving the comfort of wearing. (1) sand lotion a) bulking agent: bulking conditions such as bulking agent, concentration, temperature and time are selected according to fiber type, fabric structure and compactness. When sand washing cotton clothes, alkaline bulking agents such as soda ash can be used for bulking treatment. B) Sand washing: after the clothes are puffed, the fibers are loose, and then the loose surface fibers are rubbed by special sand washing to produce plump and soft fluff. To make the suede full, it is necessary to choose sand powders with different shapes and hardness, such as rhombic sand (making loose fibers produce fluff), polygonal sand (making fluff upright) and round sand (making fluff full). C) Softening agent: Softening agent for sand washing. It is required to achieve softness and waxiness, so that the fabric can gain weight and the drape should be obviously improved. Therefore, this kind of softener has a long carbon chain and is cationic, which can be adsorbed on the fabric to achieve the purpose of weight gain. (2) At present, industrial washing machines generally use sand washing equipment for puffing, sand washing and softening, centrifugal pump dehydrator for dehydration, and knitting mills use rotary dryer for drying goose down. (3) Sand washing process cotton-padded jacket can determine the type, dosage, temperature and time of bulking agent, dosage of sand washing powder and softener, treatment temperature and time according to the weave structure, warp and weft density, yarn count thickness and twist strength. Generally speaking, the sand washing effect of yarn fabric is better than that of thread fabric, coarse count yarn is better than high count yarn, low twist is better than high twist, and products with long floating point are better than products with short floating point. 5. Chemical washing Chemical washing mainly achieves the purpose of fading by using strong alkali additives (NaOH, NaSiO3, etc.). ). After washing clothes, there is obvious sense of obsolescence, and then adding softener, clothes will have a soft and plump effect. If stone is added to the chemical washing, it is called chemical stone washing, which can enhance the fading and wearing effect, thus making the clothes have a strong sense of shabby. Fossil washing combines the effects of chemical washing and stone washing, and can achieve an effect of imitating old pilling after washing. 6. Bleaching and Washing In order to make the clothes have a white or bright appearance and soft hand feel, it is necessary to rinse the clothes, that is, after ordinary washing with clear water, heat them to 60℃, add an appropriate amount of bleach according to the depth of the bleached color, and make the color reach the mosaic within 7- 10 minutes. During operation, the direction of adding bleaching agent should be consistent with the rotation direction of the drum, so as to avoid the bleaching agent falling directly on the clothes because it cannot be diluted with water as soon as possible, resulting in local bleaching. Before bleaching, the water level in the water tank should be slightly higher to dilute the bleaching water. After the clothes are bleached and aligned, they are large (small) ......

What does it mean that sheepskin is made of washed skin?

I have the same question.

I know how to make a silk skirt that shrinks badly after washing.

Silk shrinkage repair enzyme can repair clothes with severe silk shrinkage.

Understand the meaning of the signs of the following washing methods.

The first water temperature is 40℃, the second one can't be bleached, the third one can be dried flat in the shade, the fourth one can be ironed at low temperature, and the fifth one can't be dry-cleaned.

Can heavy-washed pleated vegetable tanned sheepskin be washed?

Should not be washed, washed pleats can refer to a process in the manufacturing process, and can be nominated by citing an important process in this process; Heavy washed pleats